MORE PORTABLE TRAININGS:In as little as 10s, you can put on the undershirt, fasten the buckle, and be ready to train. The undershirt has a large adjustable size range to accommodate youth and adult trainers of all levels of fitness; the strong opening/closing cord and quick-opening buckle make it easy to keep pulling open/close during training; and we have a breathable storage bag that is small enough for quick storage.
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